//
// PropertyFileConfiguration.cpp
//
// $Id: //poco/1.3/Util/src/PropertyFileConfiguration.cpp#6 $
//
// Library: Util
// Package: Configuration
// Module:  PropertyFileConfiguration
//
// Copyright (c) 2004-2009, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//

#include "TitaniumPropertyFileConfiguration.h"

#include <cctype>

#include <Poco/Exception.h>
#include <Poco/String.h>
#include <Poco/Path.h>
#include <Poco/FileStream.h>
#include <Poco/LineEndingConverter.h>

namespace Poco {
namespace Util {


TitaniumPropertyFileConfiguration::TitaniumPropertyFileConfiguration()
{
}


TitaniumPropertyFileConfiguration::TitaniumPropertyFileConfiguration(std::istream& istr)
{
    load(istr);
}

    
TitaniumPropertyFileConfiguration::TitaniumPropertyFileConfiguration(const std::string& path)
{
    load(path);
}


TitaniumPropertyFileConfiguration::~TitaniumPropertyFileConfiguration()
{
}

    
void TitaniumPropertyFileConfiguration::load(std::istream& istr)
{
    clear();
    while (!istr.eof())
    {
        parseLine(istr);
    }
}

    
void TitaniumPropertyFileConfiguration::load(const std::string& path)
{
    Poco::FileInputStream istr(path);
    if (istr.good())
        load(istr);
    else
        throw Poco::OpenFileException(path);
}


void TitaniumPropertyFileConfiguration::save(std::ostream& ostr) const
{
    TitaniumMapConfiguration::iterator it = begin();
    TitaniumMapConfiguration::iterator ed = end();
    while (it != ed)
    {
        ostr << it->first << ": " << it->second << "\n";
        ++it;
    }
}


void TitaniumPropertyFileConfiguration::save(const std::string& path) const
{
    Poco::FileOutputStream ostr(path);
    if (ostr.good())
    {
        Poco::OutputLineEndingConverter lec(ostr);
        save(lec);
        lec.flush();
        ostr.flush();
        if (!ostr.good()) throw Poco::WriteFileException(path);
    }
    else throw Poco::CreateFileException(path);
}


void TitaniumPropertyFileConfiguration::parseLine(std::istream& istr)
{
    static const int eof = std::char_traits<char>::eof(); 

    int c = istr.get();
    while (c != eof && std::isspace((char) c)) c = istr.get();
    if (c != eof)
    {
        if (c == '#' || c == '!')
        {
            while (c != eof && c != '\n' && c != '\r') c = istr.get();
        }
        else
        {
            std::string key;
            while (c != eof && c != '=' && c != ':' && c != '\r' && c != '\n') { key += (char) c; c = istr.get(); }
            std::string value;
            if (c == '=' || c == ':')
            {
                c = readChar(istr);
                while (c != eof && c) { value += (char) c; c = readChar(istr); }
            }
            setRaw(trim(key), trim(value));
        }
    }
}


int TitaniumPropertyFileConfiguration::readChar(std::istream& istr)
{
    for (;;)
    {
        int c = istr.get();
        if (c == '\\')
        {
            c = istr.get();
            switch (c)
            {
            case 't':
                return '\t';
            case 'r':
                return '\r';
            case 'n':
                return '\n';
            case 'f':
                return '\f';
            case '\r':
                if (istr.peek() == '\n')
                    istr.get();
                continue;
            case '\n':
                continue;
            default:
                return c;
            }
        }
        else if (c == '\n' || c == '\r')
            return 0;
        else
            return c;
    }
}


} } // namespace Poco::Util
